Support vague flight segments with airport/date-only details

src/lib/server/db/migrations.ts

@@ -195,7 +195,7 @@ export function runMigrations(db: Database): void {
 			airline_iata    TEXT,
 			airline_icao    TEXT,
 			airline_name    TEXT,
-			flight_number   TEXT NOT NULL,
+			flight_number   TEXT,
 			position        INTEGER NOT NULL DEFAULT 0,
 			created_at      TEXT NOT NULL DEFAULT (datetime('now'))
 		)
@@ -216,12 +216,18 @@ export function runMigrations(db: Database): void {
 			arrival_airport_code   TEXT,
 			arrival_terminal       TEXT,
 			arrival_gate           TEXT,
+			arrival_date           TEXT,
 			arrival_datetime       TEXT,
 			arrival_timezone       TEXT,
 			created_at            TEXT NOT NULL DEFAULT (datetime('now')),
 			updated_at            TEXT NOT NULL DEFAULT (datetime('now'))
 		)
 	`);
+	try {
+		db.run(`ALTER TABLE flight_routes ADD COLUMN arrival_date TEXT`);
+	} catch {
+		/* already exists */
+	}
 
 	// Flight booking passengers - links people to flight bookings
 	db.run(`